join vs inner join
-- Rows with ID existing in both a and b -- JOIN is equivalent to INNER JOIN SELECT a.ID, a.NAME, b.VALUE1 FROM table1 a JOIN table2 b ON a.ID = b.ID WHERE a.ID >= 1000; -- ⇓ Test it ⇓ (Fiddle source link)
join vs inner join
-- Rows with ID existing in both a and b -- JOIN is equivalent to INNER JOIN SELECT a.ID, a.NAME, b.VALUE1 FROM table1 a JOIN table2 b ON a.ID = b.ID WHERE a.ID >= 1000; -- ⇓ Test it ⇓ (Fiddle source link)
merge clause with inner join
MERGE table1 USING (SELECT table3.keycolumn, table2.DataColumn1, table2.DataColumn2 FROM table2 INNER JOIN table3 ON table2.anotherKey = table3.anotherKey WHERE table2.anotherKey = 'A1') tmpTable ON table1.keyColumn = tmpTable.keyColumn WHEN MATCHED THEN UPDATE SET table1.DataColumn1 = tmpTable.DataColumn1 ,table1.DataColumn2 = tmpTable.DataColumn2;
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